Improvement in window-blind stops



W B. SURDM. Window-Blind Stop No. 200,005. Patented Feb. 5,1878.

w m W m WITNFSSES= 1 Tom ATIOBNBYS.

N.PEYEHS. PHOTO-LITHOGRAPNER wAsH NGTON D C UNITED STA'rns PATENTOFFICE.

W'ILLIAM B. SURDAM, OF FORT DODGE, IOWA.

IMPROVEMENT IN WINDOW-BLIND STOPS.

Specification forming part of Letters Patent No. 200,005, dated February5, 1878; application filed September 10, 1877.

To all 'whom it may concern:

Be it known that I, WILLIAM BIsHoP SUR- DAM, of Fort Dodge, county ofWebster and State of Iowa, have invented a new and useful Improvement inWindow-Blind Steps, of which the following is a specification:

The invention relates to blind-slat operating and looking devices,commonly termed blind-stops; and it consists in the combination with theblind-slats and their connecting-bars of pivoted levers arranged on theblind -firame and Operating-levers passing through the window-casing, aswill be hereinafter fully explained.

In the annexed drawings, Figure l is a vertical section through awindow-frame, showing the shutter open and my iuvention applied to it.Fig. 2 is a view of the window frame and blind, looking from the insideoutward. Figs. 3 and 4 are details.

Similar letters of reference indicate corresponding parts.

The letter A designates a window-frame, and B the blind, which latter isprovided with pivoted slats O, connected together by slat-bars D D inthe usual well-known manner. These slat-bars are connected to levers E Eby means of links F F, which may be constructed and applied as shown inFig. 1, or they may be made as shown in Fig. 3, or in any other suitablemanner.

The levers E E are pivoted at a, a to the panel of the blind, on theinside thereof, and the inner limbs of these levers extend slightlybeyond the hinged side of the blind, as clearly shown in Fig. 1.

The drawing rcpresents the two levers E E connected to the blind bymeans of screws, With washers interposed between the heads thereof andthe panel; but I do not limit my invention to this method of attachingthe levers.

G G designate two levers, which are rccessed into one of the uprights ofthe window-frame, and which have their fulcra thereon.

The inner ends of the levers G have knobs g' applied to them, and theouter ends of these levers are bifurcated, and so arranged relatively tothe inner ends of the levers E, that when the blind is shut these leverswill engage with the levers G, thereby allowing a' person to adjust theblind-slats from the insid:ll of the room without raising the window-Safs It is obvious that the slats can` be opened and shut in the usualmanner.

The Operating-levers G are provided with a slot, g, through which passesthe fulcrunipin or screw h. By this means the aforesaid levers arecapable of being moved longitudinally, for the purpose of enablin g theforked ends of the levers to be properly engaged with the levers E,which are mounted on the blind-frame and connected with the blindslats.

The forked and slotted Operating -levers passing through thewindow-casing are easily connected with the levers on the blind, inwhatever position said levers may be in when the blind is closed, bysimply withdrawing the forked levers so as to move the same beyond theblind-levers, when, by properly setting the forked levers and moving thesame forward, they receive the ends of the blind-levers.

In order to lock the blind-slats or hold them in a closed position, Iprovide a wedgeshaped or triangular plate, J, which is driven edgewiseinto the window-casing in proper relation to the inner end of the forkedoperating-lever. Said lever being made of spring metal, it can readilybe sprung over the top of the plate J, When it and the blind-slats aresecurely locked and prevented from being moved except by disengaging thelever G from the catch-plate, which can only be done from the inside ofthe house.

It is not essential that the looking device be combined with the upperseries of the blind slats, it being sufficient when outside tamperingwith the closed lower slats is prevented. o

Having` thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1`. The combination of the levers G, providedwith a forked inner end, and having a slot, g, and fulcrum-pin h, withthe levers E, connecting-links F, upper and lower series of slats of thewindow-blind, and window-casing A, as and for the purpose set forth.

2. The combination of the locking-stop J with the window-casing A,Operating-lever G, blind-lever E, connecting-link F, and seriesofblind-slats, as herein set forth.

WILLIAM BISHOP SURDAM.

Witnesses:

M. D. O7G0NNELL, v GEO. L. GREGORY.

